A block rests on a horizontal surface and the coefficient of static friction between the block and the surface is 0.400. The surface begins to move back and forh in the horintal direction, vibrating in SHM ith a constant amplitude of 10 cm but a gradually increasing frequency. Find the frequency at which the block begins to slide on the surface.

Question

irishboy123 · Answer

Start with the standard equation for shm. X = A cos(wt). Yes?

The find the point of max acceleration from this. The platform is accelerating the block by friction but at some point the force required to accelerate the block will exceed friction.

anonymous · Answer

so I need a angular frequency? How can I find that from this information?

@irishboy123

irishboy123 · Answer

well the w is the angular velocity in rad/sec.  in this case, clearly the motion is horixintal, not circular but the idea is the same.

|dw:1427137499049:dw|

as i said, set up the standard equation for shm in this context.

we are not allowed to post answers here, just helpful hints etc.

i hope this helps you somehow.